A Gantt app for architects
Arno Plan is a focused Gantt app for architects: build design and construction programmes on the RIBA Plan of Work, track the critical path and export charts.
macOS & Windows · 30-day trial · no card required
1.1Feature
Draw the programme like you'd sketch it.
Bars live in working days on a real calendar — bank holidays and office closures included. Drag to move, pull the ends to resize, or drag across an empty row to draw a new bar exactly where the work goes.
Try it — drag the red bar, or draw on the empty row
1.2Feature
Connect the work.
Click a bar to reveal its link handles, then pull one onto another and the logic follows: finish-to-start dependencies with editable elbow arrows. Click an arrow to bend it around your programme, not through it.
Click a bar, then drag the red dot at its end onto another
1.3Feature
Know what actually moves the end date.
One toggle traces the longest chain of dependent work through the programme. Everything on it turns red; everything off it has float. Argue with the contractor about facts, not feelings.
Toggle it, then drag bars and watch the path re-route
1.4Feature
Read the programme four ways.
The same bars, re-coloured by stage, by discipline, by person, or left as their own colour — with a legend that follows. Whatever the meeting is about, the chart speaks to it.
Switch the lens
1.5Feature
The programme prices itself.
Resource the stages with day rates and Arno Plan turns the same bars into a fee proposal — by stage, by team, or by person. When the programme moves, the fee moves with it.
1.6Feature
Issue it like a drawing.
Export to PDF, SVG or PNG at proper paper sizes — A4 to A0, portrait or landscape, with a title block: project, client, revision, issue date. Your programme goes out looking like it came from a practice, because it did.
1.7Feature
Make it yours.
Twelve colourways, five bar styles, per-task colour and full control of the type. The same programme can read as a studio document, a blueprint or a redline markup — whatever the meeting needs.
Flip the looks
Stage 2 · Pricing
Simple pricing. No surprises.
2.1 Solo
For the individual architect running live projects.
Start free trial- Unlimited programmes
- Milestones, dependencies & critical path
- Fee proposals & templates
- 2 devices
- 1-month free trial
2.2 Group
For practices sharing programmes across a team.
Buy seats- Everything in Solo
- Shared team seats
- Central seat management
- 2 devices per seat
- Priority support
2.3 Custom
For larger teams or specific billing and contract needs.
Contact us- Volume seat discounts
- Annual or invoice billing
- Priority onboarding & support
- Bespoke terms
Prices in GBP, plus VAT where applicable. Payments processed securely by Stripe. Questions? hello@arnoplan.co.uk
RFI · Frequently asked
Requests for information.
How do I try it before paying?
Download Arno Plan, create an account, and start a 30-day free trial straight away, no card required. Build and export real programmes for the full 30 days; when the trial ends you choose whether to subscribe. Your files stay on your device either way.
Which platforms does it run on?
macOS and Windows, as a native desktop app, not a browser tab. Same file format, same feel, on either machine.
Where are my files stored?
Programmes are ordinary .arnoplan files saved on your own computer. Nothing is locked in a cloud you cannot reach, and nothing is uploaded unless you choose to share it.
Is it actually built around the RIBA Plan of Work?
Yes. Programmes are structured by work stage, Stage 0 to 7, with stages, groups, tasks and milestones nested the way a real project runs, not bent out of a generic project-management tool.
How do seats and devices work?
Solo covers one person on 2 devices. Group is billed per seat at £15/seat/month, each seat also covers 2 devices, and you add or remove teammates centrally from your account. Need more seats or different billing? The Custom plan covers volume discounts and invoicing.
How do I cancel?
From your account inside the app, in one click. Your plan stays active until the end of the current billing period. See our Refunds & Cancellation policy for details.